Yes, but at the risk of losing huge swaths of voters who are backing Biden because he would never do unlawful acts in the first place. It's the paradox of tolerance but with democracy.
He could something immensely popular like sanctioning US citizens Alito and Thomas. He can take their vacation homes, reassign their official residents, change their SS protection to regular DOJ
But that's only one thing. There's tons of options available that won't be publicized. Have Biden order the CIA (official act) to do something covert about Trump/Thomas/Alito. It MIGHT come out before the election, but regardless is basically unprosecutable.